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Finding the Fourth Proportional to 349.56, 480.42 and 271.80

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Solution

The fourth proportional to 349.56, 480.42 and 271.80 is: 373.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    349.56 : 480.42 = 271.80 : x
  2. Step 2: Convert to fraction form
    349.56/480.42 = 271.80/x
  3. Step 3: Cross multiply
    349.56x = 480.42 × 271.80
  4. Step 4: Simplify right side
    349.56x = 130,578.16
  5. Step 5: Solve for x
    x = 130,578.16/349.56
  6. Step 6: Final answer
    x = 373.55

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.